Mothers of the Jamaican cave frog species - Eleutherodactylus cundalli - carry their froglets from the cave into the rain forest.

‘This is really fascinating because, though males are known to guard eggs, they have never been known to transport the froglets,’ said Janalee P. Caldwell, specialist in amphibian biology at the University of Oklahoma.

The tiny, freshly metamorphosed wood froglets then leave the water for a life on land.